The Seventh Sudden Oak Death Science Symposium
University of California
The Seventh Sudden Oak Death Science Symposium


Download a printable file of presentation and poster abstracts

Tuesday, June 25  

7:45 am      REGISTRATION

View poster
abstracts below

8:30 am      Research Reports at the Golden Gate Club, The Presidio

Session 1 – Sudden Oak Death in Oregon
Moderator: Blakey Lockman, US Forest Service, Pacific Northwest Region, Portland, OR

Slowing the Spread of Sudden Oak Death in Oregon Forests, 2001-2018
- Sarah Navarro, Oregon Department of Forestry, Salem

Intensification of Sudden Oak Death in Oregon Forests in the Absence of Eradication Treatments
- Alan Kanaskie, Oregon Department of Forestry, Salem

Efficacy of Local Eradication Treatments Against the SOD Epidemic in Oregon Tanoak Forests
- Everett Hansen, Oregon State University, Corvallis (retired)

Comparative Epidemiology Aspects of Phytophthora ramorum EU1 and NA1 in the Field
- Jared LeBoldus, Oregon State University, Corvallis

Session 2 – Phytophthora ramorum in California
Moderator: David Rizzo, Department of Plant Pathology, UC Davis

Over Two Decades of Sudden Oak Death in California
- Kerri Frangioso, Department of Plant Pathology, UC Davis

Impacts of and Responses to Sudden Oak Death on Marin Watershed Lands
- Andrea Williams, Marin Municipal Open Space District

Status of the Phytophthora ramorum Epidemic across Forests of the East Bay Regional Park District, San Francisco Bay Area, California
- Brice McPherson, Department of Environmental Science, Policy, and Management, UC Berkeley

Session 3 – Phytophthora ramorum Management I
Moderator: Phil Cannon, US Forest Service, Pacific Southwest Region, Vallejo

Early Host Resistance Selection and Development Should Have Been a Primary Management Response to the Sudden Oak Death Epidemic
– Enrico Bonello, Department of Plant Pathology, The Ohio State University

Incidence and Distribution of Resistance in a Coast Live Oak/Sudden Oak Death Pathosystem
– Anna Conrad, Department of Plant Pathology, The Ohio State University

12:00 pm    LUNCH (provided

1:00 pm      Research reports: Phytophthora ramorum Management 

Session 4 – Phytophthora ramorum Management II
Moderator: Gary Chastagner, Washington State University, Puyallup

Long-term Performance of Sudden Oak Death Management Treatments in Northern California Locations
– Ted Swiecki, Phytosphere Research, Vacaville

Selective Thinning of California Bay Laurel is a Cost-Effective Way to Control SOD in Mixed-Oak Woodlands
- Doug Schmidt and Matteo Garbelotto, Forest Pathology and Mycology Lab, UC Berkeley

Yoga break led by Janice Alexander and Bonnie Nielsen,
UC Cooperative Extension, Marin County

Session 5 – Diagnostics and Genetics
Moderator: Bruce Moltzan, US Forest Service, Forest Health Protection, Washington, DC

A High Throughput DNA Finger Printing Tool for Biosurveillance of the Sudden Oak Death Pathogen, Phytophthora ramorum
- Resmi Radhamony, University of British Columbia, Vancouver, British Columbia

Dual Transcriptome Analysis Reveals Insights Into Innate and Phosphite-induced Resistance of Tanoak to Phytophthora ramorum
– Takao Kasuga, USDA Agricultural Research Service, Davis

Session 6 – Lightning talks
7 talks of 7 minutes + Q & A

Bark Scribing as a Treatment for Sudden Oak Death: A Case Study in Why Controls Matter
- Steven Swain, University of California Cooperative Extension, Marin & Sonoma Counties

Phytophthora Species Can Be Reliably Detected by Dogs Both From Infested Substrates and Infected Plants
- Lauralea Oliver, H.T. Harvey and Associates and K9inSCENTive, LLC

Using Citizen Science and Outreach Education to Reduce the Risk of Phytophthora ramorum Spread in Oregon Forests
- Norma Kline, Oregon State University, Forestry and Natural Resource Extension, Myrtle Point, OR

The Development and Application of Dynamic, Geospatial P. ramorum Spread Models for Oregon
- Devon Gaydos, North Carolina State University, Center for Geospatial Analytics, Raleigh, NC

Insights Into Sudden Oak Death Epidemiology Following Management
- Hazel Daniels, Department of Botany and Plant Pathology, Oregon State University

Fire and Sudden Oak Death’s Effect on Species Prevalence in Big Sur, California
- Jacqueline Rose, California Polytechnic State University, San Luis Obispo

Wildfire Limits the Occurrence, Frequency, and Impacts of Phytophthora ramorum in the Coastal Forests of Big Sur, CA
- Alison Simler, UC Davis, Rizzo lab

4:30 pm      Presidio Nursery native plant nursery tour and social


Wednesday, June 26

8:00 am      REGISTRATION

8:30 am      Indoor Sessions at the Golden Gate Club, The Presidio 

Session 7 – Diagnostics and Genetics
Moderator: Matteo Garbelotto, Forest Pathology and Mycology Lab, UC Berkeley

Approaches to Phytophthora issues in New Zealand and Australia
- Nari Williams, Scion, Rotorua

Biosecurity and Phytophthora Monitoring at the Royal Botanic Garden Edinburgh
- Katy Hayden, Royal Botanic Garden Edinburgh

Session 8 – Focus on Phytophthoras in Restoration Areas I
Moderator: Janell Hillman, Santa Clara Valley Water District

Evaluating Threats Posed by Exotic Phytophthora Species to Sensitive Plant Communities in the Santa Clara Natural Community Conservation Plan Area
- Ted Swiecki, Phytosphere Research

Exotic Phytophthora Species are Being Systematically Introduced in California Wildlands During Restoration Projects
- Laura Sims, UC Berkeley, Forest Pathology and Mycology lab, now at Louisiana Tech University, Ruston, LA

Ten New Provisional Species of Phytophthora and Nothophytophthora from California
- Tyler Bourret, UC Davis, now at Washington State University, Puyallup

Session 9 – Focus on Phytophthoras in Restoration Areas II
Moderator: Jennifer Parke, Oregon State University

Assessing the Incidence and Diversity of Phytophthora Species Occurring in Planned Restoration Areas of the Angeles National Forest
- Sebastian Fajardo, UC Davis, Rizzo Lab

Soilborne Phytophthora spp. at Restoration Sites in the Midpeninsula Regional Open Space District
– Ebba Peterson, Oregon State University

Understanding Metabarcoding Benefits and Limitations for Analysis of Phytophthora Communities
- Neelam Redekar, Oregon State University

Session 10 – Nurseries
Moderator: Alisa Shor, Golden Gate National Parks Conservancy

Determining the Minimum Treatment Area and Importance of Soil Moisture for Effective Soil Solarization in Nurseries
- Logan Bennett, Oregon State University

Accreditation to Improve Restoration Program Shows Promise for Pathogen Prevention
- Diana Benner, The Watershed Nursery, Richmond, CA

Approaches to Protect Against Phytophthoras at the Presidio
- Christa Conforti, The Presidio Trust

12:15 pm    LUNCH (provided)

1:15 pm      Panel discussion – Managing tree mortality, forest diseases and Phytophthoras 
                  Moderator: Chris Lee, CALFIRE, Fortuna.

Session 11 – Focus on Wildland Tree Diseases
Moderator: Kim Corella, CALFIRE, Los Osos

Phytophthora Species Associated with Decline and Mortality of Native Vegetation in California Wildlands
– Chris Lee, California Department of Forestry, Fortuna

Common and Uncommon Diseases of Oak, Tanoak, Redwood and Bay - New Diagnostic Tools Have Led to Important New Discoveries
– Cheryl Blomquist and Suzanne Latham, California Department of Food and Agriculture

3:00 pm      7000 Marks: Interactive Art and Science

4:00 pm      Poster Session with Local Foods Tasting - view poster abstracts below


Thursday, June 27

Optional field trip to Mt. Tamalpais (pre-registration is required)  

9:00 am    Departs from Main Post Parking Lot, The Presidio (gather at  8:45 am)

Sudden Oak Death in the Context of Global Tree Mortality and Regional Efforts to Limit Carbon Emissions
– Richard Cobb, CAL-Poly San Luis Obispo

Water Yield in Sudden Oak Death Impacted Forests
- Peter Hartsough, UC Davis, Dept. of Land, Air, and Water Resources

5:00 pm    Return to Main Post Parking Lot, The Presidio 

5:00 pm    Presidio Twilight. Off the grid – picnic (on your own 


Poster Abstracts

Observations of Castanea sativa as a Host of Phytophthora ramorum in England over a Decade
- Biddle (poster image)

Characterization of Hybrids Between Phytophthora lacustris and P. riparia - Bourret (poster image)

Intraspecific Diversity of Californian Clade 3 Phytophthora Isolates - Bourret (poster image)

A Technique for Treating Contaminated Soil with Steam for Eradication of Phytophthora - Elliott (poster image)

Management of Phytophthora ramorum at a Botanical Garden in Washington State, USA - Elliott (poster image)

Changes to Sudden Oak Death Affected Redwood Forests in Big Sur after a Short Fire Return Interval - Frangioso

Exploring Interactions among Disease, Fuel Loads, and Fire Intensity in Sonoma County Oak Woodlands - Hernandez

Rapid Recovery and Detection of Phytophthora ramorum Propagules in Nursery Water - Luster

Genomic and Metagenomic Exploration of Microbial Endophytes and a New Potential Phytophthora Species in the Monkey Puzzle Tree Araucaria araucana in Chile - Márquez 

A Survey of Phytophthora and Pythium spp. in Soil from Upland Prairie Restoration Sites in Western Oregon - Parke (poster image)

Comparative Epidemiology of NA1 and EU1 Phytophthora ramorum Populations in Curry County, OR
- Peterson (poster image)

Distribution of Phytophthora quercina in the Midpeninsula Regional Open Space District - Peterson (poster image)

Phytophthora Diversity in Lake Mathews, the Irrigation Water Source for a Southern California Nursery - Redekar (poster image)

Is Sudden Oak Death Becoming a Threat to California’s Chaparral Ecosystem? First Indications for Phytophthora ramorum Moving into Drier and Warmer Habitats - Schweigkofler (poster image)

Susceptibility of Canadian Flora to EU2 Lineage of Phytophthora ramorum and Pathogen Sporulation Potential - Shamoun (poster image)

Variation in Susceptibility to the EU1 and NA1 Lineages of Phytophthora ramorum Among Southern Oregon Tanoak Families - Sondreli

Role of Herbivorous Insects on California Bay Laurel in Sudden Oak Death Disease Dynamics
- Wininger (poster image)

Spread the Word, Not the Disease! Sudden Oak Death Outreach and the UC Master Gardener Program of Sonoma County SOD Specialists - Wininger (poster image)

A Healthy World and Plants with Phytophthora? Multiple Introductions of Tree Pathogens to a Newly Established Woodland - Wylder (poster image)

Download all abstracts, with presentations listed first and posters listed after

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